I have an easy one, I have an 89 F-150 4x4, I was gonna change the transfer case fluid (the truck is new to me), but I found my 3/8 extension wont fit the drain plug, its close but not a good fit. Does anyone know offhand what you use, I was guessing maybe a t-56ish star socket? I dont have one that size but that was my best guess and I would rather not make three trips to the store until I find the right one. Thanks